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The final render from Lightwave is often not very exciting to look at, some postwork is needed to make it a little more fun, in this case it's in an underground damp tunnel with nasty things lurking around the corners so some dirt and grime is needed to make it more alive, the first step is to mesh transform some parts of the image, many edges are way to straight to look realistic, so with mesh transform this can be fixed, takes some work but is worth the trouble, with some dust, stains, dirt and grime on top it will give a little nicer final result.

Thanks to for all the dirt and grime brushes, all rendering is done in Lightwave and postwork is done in Clip Studio Paint.